export default {
    getCookie (name) {
      var arr,reg=new RegExp("(^| )"+name+"=([^;]*)(;|$)");
      if (arr=document.cookie.match(reg)) {
        return unescape(arr[2]);        
      } else {
        return null;        
      }
    },
    delCookie () {
        var exp = new Date();
        exp.setTime(exp.getTime() - 1);
        document.cookie = 'ad_statistics' + "=" + "" +";expires="+exp.toGMTString();
    },
    setCookie (username) {
        // 写 cookie
        var Days = 3;
        var exp = new Date();
        exp.setTime(exp.getTime() + Days*24*60*60*1000);
        document.cookie = 'ad_statistics' + "=" + username + ';expires=' + exp.toGMTString();
    }
}
